By howardpa
My DO firewall (not UFW) is set up to allow only HTTPS and SSH.
sudo apt-get update
fails with
Err:1 http://mirrors.digitalocean.com/ubuntu focal InRelease Temporary failure resolving ‘mirrors.digitalocean.com’
but is ok when the firewall is disabled
What rules would I add to the firewall to allow ‘apt-get update’ ?
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Hi, How do the outbound rules look like in your firewall’s settings ? Default settings are like below
Type Protocol Port Range Destinations
ICMP ICMP All IPv4 All IPv6
All TCP TCP All ports All IPv4 All IPv6
All UDP UDP All ports All IPv4 All IPv6
All outgoing traffic is allowed by default, and it is OK for most implementations.
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